wireless connection drops (Lenovo/Intel)--other laptop works

Below is my sysinfo. I have a Lenovo Y560 that worked fine up excepting a keyboard issue that I fixed based on a youtube posting. The fix was to tape a small piece of antistatic tape under the keyboard over a screwlike piece of metal. Apparently that metal was causing static by rubbing against the keyboard data cable. It fixed the problem. Previous to the fix, various keyboard keys prompted shortcut keys (maddening and couldn't type).

After assembling the keyboard and the top of the keyboard pad (was very careful to not bring static and assemble properly), the wireless connection began to drop. I have another laptop (Asus) with a similar set-up but a Centrino wifi card (vs. Intel 1000 bgn for the Lenovo) and it was connecting to the wifi no problem. Often, I'll see a yellow sun symbol over the wifi bars or a blue animated circle or a red x. Changing the standard settings does not help. Attaching an ethernet cable brings up a perfect connection. Help! Some things I've thought could be the problem:

1) I've covered an antenna of some sort with the anti-static plastic (pea-sized piece).
2) My wifi card is bad and coincidentally went out when I fixed the other problem above.
3) When the keyboard problem existed, I hit a shortcut that reconfigured the wifi somehow (but it
worked fine before I opened up the keyboard.

Opening up the keyboard was pretty basic so I don't think I messed anything up by opening it (again, everything works fine except for the wifi). See the youtube video I saw here: http://www.youtube.com/watch?v=FdGXTo-dpYc.

Thanks Tech Guys in advance for any help you can offer! I read through a lot of other posts on the website and even tried some of the command prompts to reset things -- no improvement.